First Phosphate Completes Infill Drill Program

Saguenay-Lac-Saint-Jean, Quebec--(Newsfile Corp. - March 31, 2026) - First Phosphate Corp. (CSE: PHOS) (OTCQX: FRSPF) (OTCQX ADR: FPHOY) (FSE: KD0) ("First Phosphate" or the "Company") is pleased to announce the completion of its infill drill program launched on October 21, 2025 at its Bégin-Lamarche property in Saguenay-Lac-St-Jean, Quebec. The drilling campaign has confirmed extensive, continuous mineralization across the existing horizon of the initial resource estimate.